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1、萃取蒸馏法分离邻氯甲苯和对氯甲苯Thisarticleiscontributedbyhjt3715948PdfdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyoufirstselectTXT,ordownloadthesourcefiletothelocalview.VIPinformationhttp://www.cqvip.comSincethemarket,bythevastnumberofuserswelcome,andbypharmaceuticalcompanies,
2、andachievedsignificanteconomicbenefits.TheindicatorsmeettheUnitedStates,BritishandJapanesePharmacopoeiastandards.Onlydomesticdemandfor30tonsperyear,thecountry's00internationaldemandisalsogreat.Costofrawmaterials2yuan/K;referenceprice5g8,00-0yuan/K;theannualoutputof1~0tons.Intheprocess
3、of1g034-methoxybenzaldehydeintermediatesynthesizingsulfonamidesynergisttrimethoprim.Completelybreaktheprevioushalfsynthesisprocessroute,TheprocessandprocesslevelisthemostadvancedintheworldTrimethoprimsynthesismethod.Byparacresolsynthesisofbenzaldehydedibromide(?4-hydroxy,35twobromoben
4、zaldehyde)crudehydrobromicacidrecoveryandquality;hydrobromicacidproduction;synthesizedbybenzaldehydedibromide.Throughtheprovincialtechnicalappraisal,wonthescienceandtechnologyprogressawardofscienceandtechnologycommission.FromthenewtechnologyofindustrialpreparationofrefinednaphthaleneQ
5、ijiangIntroduction:thenewtechnologyofusingnaphthaleneasrawmaterial,usingthenewseparationtechnology(membrane)preparationofhighpuritynaphthalene,hassimpleprocess,easyoperation,smallinvestment,Lowcost,lowenergyconsumption,lowpollutionadvantages.Theindustrialoperationconfirmedbytheprocess
6、fromtheproductionofnaphthalene,technicalindicatorsPreparationofhardenedoilbyhydrolysisProductiontechnologyofstearicacidandglycerinDescription:stearicacidproductsarewidelyusedinrubber,plastics,textiles,papermaking,foodandotherindustries,glycerinisalsomedicine,Cosmetics,tobacco,food,pap
7、ermaking,explosivesandotherindustriesarenotallowedThelackofimportantrawmaterials,theuseofhardeningoil,hydrolysis,distillationandotherproductionMorethanthenationalstandardofcommodity,theyieldismorethan9%,5pertonofrefinednaphthaleneproductioncostis50%lowerthantheoriginalcost.thisTheprom
8、otion
